Weight loss medications can be a helpful tool for people struggling to lose weight through diet and exercise alone. The NHS offers several approved medications, but how effective are they? Let’s explore the science behind these treatments.
What Medications Are Available on the NHS?
There are three main weight loss medications approved by the NHS:
- Orlistat (Xenical/Alli) – Blocks fat absorption, reducing calorie intake.
- Wegovy (Semaglutide) – Regulates appetite by mimicking the hormone GLP-1.
- Saxenda (Liraglutide) – Works similarly to Wegovy but requires daily injections.
How Effective Are These Medications?
Orlistat
- Reduces dietary fat absorption by around 30%.
- Can help people lose 5-10% of body weight over 12 months.
- Works best when combined with a low-fat diet.
Wegovy & Saxenda
- Patients using Wegovy lost 15% of their body weight on average in clinical trials.
- Saxenda users lost 5-10% of body weight over a year.
- Both medications reduce appetite, making it easier to follow a healthy diet.
Are There Any Side Effects?
Like all medications, these treatments come with potential side effects:
- Orlistat: Digestive issues like diarrhea and bloating.
- Wegovy & Saxenda: Nausea, headaches, and mild stomach discomfort.
Who Should Consider NHS Weight Loss Medications?
These medications are recommended for people who:
- Have a BMI of 30+ (or 27+ with health risks).
- Have tried diet and exercise but struggled to lose weight.
- Are willing to commit to long-term lifestyle changes.
Final Thoughts
NHS-approved weight loss medications can be highly effective when used correctly. However, they work best when combined with healthy eating, exercise, and behavior changes. If you’re considering weight loss medication, speak to your GP about whether it’s the right choice for you.
